Hi, I'm trying to use A20 clk_out_a in Linux 4.4-rc1.
I wrote a kernel module in order to enable the clock: http://svn.nomike.com/playground/trunk/Navi/TSS463AA/Linux/tss463aa.c However, it does not work, in the following way: I connected an oscilloscope to the pin PI12. Then I used manual bitbanging to make sure it's the correct pin: http://svn.nomike.com/playground/trunk/Navi/WORKING_CLOCK When I do that, I see a nice square wave on the 'scope. However, when I then load the kernel module, the display on the 'scope flatlines. On one hand that's a good sign since it means that it at least found the clock definition in the device tree file and uses the right pin. On the other hand I can't figure out what the problem is. Does clk_out_a work for anyone? How to use it (I'd need a clock of max 8 MHz for driving a TSS463AA, min 150 kHz)? The tss463aa definition in my device tree file is: &spi2 { status = "okay"; spidev0: spidev@1 { compatible = "atmel,tss463aa"; reg = <0>; spi-max-frequency = <4000000>; }; }; Thanks, Danny -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
